Windows Server 2008 R2 Datacenter is a server program that assists with achieving mission-critical
business goals to attain a high level of reliability and uptime.
Enterprises that need server applications on a large-scale basis
can trust on Windows Server 2008 R2 Datacenter compared to other
Windows Server 2008 R2 versions.

Organisations that have been using Datacenter editions of Windows
Server 2003, Windows Server 2008, and Windows Server 2000 can opt
for a free upgrade to Windows Server 2008 R2 Datacenter.

Supports BranchCache, wherein client computers positioned in local
or satellite offices are given access to the primary server of the
main office so they can obtain content in a secure manner

Provide full solution to arrange and utilise high performance
distribution enterprise applications through the use of the
Application Server feature

Allow companies to acquire non-proprietary servers and to give the
operating system a chance to depend on supportability, reliability,
and enterprise-level tasks

Include Network Policy and Access Services to provide connections
to remote and local networks as well as to give network
administrators the authority to run client health guidelines and
network access

Go well with companies that use a minimum of 8 and a maximum of 64
processors and require 2TB of RAM

Advance virtualisation by using Hyper-V technology that allows the
production and administration of virtual computing environment,
where many operating systems are running simultaneously and
computing sources are used effectively

A new Hyper-V is introduced in Server 2008 R2. The original Server
2008 has the pre-release version of Hyper-V, but the R2 edition has
the updated version of it. In the version of Hyper-V released in
R2, the VMs allow up to thirty-two cores per VM. Improved Internet
performance will also be experienced whenever Jumbo Frames and TCP
Offload are being used.

The Core Parking of Server 2008 R2 is also one of the best
improvements made in this edition. The functionality of Core
Parking improves the power management of the server. When
Datacenter is installed on your computer, unused cores will be set
aside or suspended. This results in saving power needed to run
those unused cores. The activation of the Parked Cores can be done
in milliseconds which will increase workloads.